Apparatus for spinning metal.



No. 802,082. PATENTED OCT. 17, 1905. E. OLDENBUSGH.

APPARATUS FOR SPINNING METAL.

APPLIGATION FILED MAE.13, 1905.

5 SHEETS-$HEBT l.

| IHHI No. 802,082. PATBNTED OCT. 17, 1905.

E. OLDENBUSOH.

APPARATUS FOR SPINNING METAL.

APPLICATION FILED MAR.13, 1905.

5 SHEETSSHEET 2.

351 his aflozwu No. 802 082: I PATENTED OCT. 1?, 1905.

E. OLDBNBUSOH.

APPARATUS FOR SPINNING METALv APPLIOATION FILED MAR.13, 1905.

5 SHEETSSHEET 3.

No. 802,082. PATENTED OCT. 17, 1905.

' E. OLDENBUSGH.

APPARATUS FOR SPINNING METAL.

APPLICATION FILED MAR. 13, 1905.

5 SHEETS-SHEET 4.

wibmwov/a No. 802,082. 1 PATENTED 0012 17, 1905.

E. OLDENBUSGH. APPARATUS FOR SPINNING METAL.

APPLICATION FILED MAR. 13, 1905.

s sums-sum 5.

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Oct. 17, 1905.

Application filed March 13, 1905- Serial No. 249,885.

To It whom, it may concern:

Be it known that I, ERNEST OLDENBUSOH, a citizen of the United States, and a resident of the borough of Brooklyn, county of Kings, city and State of New York, have invented certain new and useful Improvements in Apparatus for Spinning Metal, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates, primarily, to apparatus for spinning metal articles from what are technically known as shells and which are made in suitable form preparatory to the spinning operation by any suitable process.

The object of my invention is to provide such an apparatus by the use of which such objects may be spun and produced in a finished condition free from wrinkles or corrugations solely by the operation of the machine and by comparatively unskilled labor.

In the accompanying drawings, Figure 1 is a front elevation of a spinning-machine embodying my invention in a preferredform. Fig. 2 is an end elevation thereof from the right. Fig. 3 is an end elevation thereof from the left. Fig. 4 is a plan view thereof. Fig. 5 is a view, partly in section, of the spinning-tool. Fig. 6 is an end view thereof. Fig. 7 is a view, partly in section, on the line 7 7 Fig. 8, of the spinning-tool and the work with the former in its inoperative position. Fig. 8 is a view of the same parts at right angles to Fig. 7 Fig. 9 is a view, partly in section, on the line 9 9, Fig. 10, showing the position of the spinning-tool and the work in the operating position of the former. Fig. 10 is a similar view at right angles to Fig. 9. Fig. 11 illustrates a modified form of spinning-tool, and Fig. 12 is an end view thereof.

Similar reference characters indicate corresponding parts in all the views.

The complete machine which I am about to describe as embodying my invention in a preferred form comprises a bed 1, provided with legs 2 and carrying the adjustable headstock 3 and the sliding tail-stock 4. The head-stock 3 is mounted on suitable Ways formed in or on the bed 1 and may be adjusted longitudinally on the bed 1 by the screw-threaded adjusting-stud 5, which is secured to the head-stock 3 and passes through the lug 6. Set-nuts 7 serve to clamp the adjusting-stud and lock the head-stock in position. A work-supporting mandrel 8 is journaled in bearings 9, formed in the standards 10, carried by the head-stock, and a drivinggear 11 is secured to the mandrel. A pinion 12, which meshes with the gear 11, is also journaled in the standards 10. A. shaft 14, which carries the driving-pulley 15, is also journaled on the bed 1, the pulley being belted to a suitable source of power. A gear 16 is secured to the shaft 14, and the pinion 12 has a, sliding engagement therewith, so that the longitudinal movement of the head-stock will not carry the pinion 12 out of mesh with the gear 16. On the end of the shaft 14 opposite to the end which carries the driving-pulley 15 is secureda pulley 17, Fig. 4, which is belted to a pulley 18.

The tail-stock 4 is slidably mounted on the bed 1 and may be locked in place thereon by the manipulation of the clamping-lever 20, carried t'hereby. A weight 21, secured to the clamping-lever 20, tends to hold it locked and also tends tocarry the tail-stock toward the head-stock, so that the back-support 22 will be held firmly against the shell on the mandrel 8 when the locking-lever is released. The back-support 22 is formed to support and hold the metal shell 24 on the mandrel 8, Figs. 8 and 10, and is journaled in bearings formed in the standards 25 of the tail-stock. It is driven synchronously with the mandrel 8 by means of the pulley l8, shaft 26, and gears 27, 28, and 29. The gear 27 is journaled in the support 25 of the tail-stock and has a sliding engagement with the shaft 26, so that it will remain operatively connected with said shaft notwithstanding any longitudinal movement of the tail-stock.

Pivotally supported at 30 above the bed 1 is a frame 31, in which is journaled a finishing-roll 32, which is arranged to be brought into contact with the work after the spinning operation is completed to smooth the same and finish the sharp angles and curves of the completed article, the periphery of the finishingroll being shaped to correspond with the contour of the completed article, and the rolls are changed as required by the special shape of the article being manufactured. The finishing-roll 32 is mounted on a shaft 35, which is journaled in the frame 31 and carries the gear 36, which meshes with the gear 37 on the shaft 14.

A shaft 40 is journaled in brackets 41, secured to the rear of the bed 1. A drivingpulley 42 is secured to one end of said shaft and a gear 43 to the opposite end. The gear 43 meshes with the gear 44, which may be ITO thrown into operative connection with the shaft 45 by the clutch 46. A treadle 48'is.

yieldingly supported beneath the bed by a spring 49 and is connected with a shaft-50,.

Figs. 2 and 3, to which a crank-arm 51 is also connected. The crank-arm 51 is connected with the clutch 46 by the rod 52, and by depressing the treadle the clutch 46 is actuated to operatively connect the gear 44 and shaft 45.

in a frame 57, which is slidingly held against the frame 31 by the set-screw 58 and adjusting-screw 59. The shaft is constantly driven from the pulley 42, and when the shaft by the operation of the clutch 46 is connected with the gear 44 the cam 55 will be rotated slowly to bring the concentric portion thereof under the bearing-roll 56, tilting the frame 31 forward, so as to bring the fin-- ishing-roll 32 into engagement with the work. The cam 55 will hold the finishing-roll against the work 24 until a revolution of the cam is nearly completed, when its concentric surface will be carried past the bearing-roll 56 and the weight of the frame 31 and itsconn'ected parts will tilt the same backward and lift the finishing-roll clear of the work. Upon the completion of the revolution of the cam shaft 45 is disconnected by releasing the pressure on the treadle 48.

At the front of the bed 1 is secured a bracket 70, which is held in place by the stud-bolts 71, which pass through slots in the bracket and enter the frame of the machine, thus permitting a vertical adgustment'of the bracket to accommodate work of Varying sizes.

ed with the shaft 74 by a universal joint 81, and to the opposite end is secured a sleeve 82, which terminates in a threaded'stud 83. The sleeve 82, which fits closely over the end of spindle 80, is provided with a slot 84'and'on each side of the slot with a lug 85, through which passes the bolt 86. The slot 84 per advantages, enables the sametool to be used on work having finlshed curved'surfa'ces of" difierent radii by simply adjusting the-sleeve A cam 55 is secured to the shaft 45, and a bearing-roll 56, secured to the frame 31, rides on said cam. The roll 56 is journaled The bracket is provided with two depending" arms 72, between which are journaled' the loose pulleys 73. At the front'of the'brack'et 70 is journaled the stub-shaft 74, to which is secured the pulley 75. The pulley 75 is driven by the belt 76 from the pulley 78, fast on the shaft 40. A spindle 80 is at one end'connect- A spinning-tool 88, which istapped to 82 longitudinally on the spindle to bring the proper'portion' of the tool into contact with the work. The spinning-tool, however, is not necessarily, conical in general outline, and in any event I preferably give it such shape that its surface consists of a multiplicity of operating faces or sections which are of different widths or are irregularly spaced, so that the periphery of the spinning-tool is unsymmetrical. This irregularity or dissymmetry may be attained in dififerent ways and need not be determined by the application of any arbitrary rule. I have shown two preferred forms in the drawings. In Figs. 5 to 10 the desired result is obtained by forming irregularlyspaced converging grooves or channels on the cone. In Figs. ll'and 12-.the irregularity is-produced' by forming a multiplicity of converging flattened sections irregularly spaced and of varyingareas.

A sleeve is-journaled loosely on the spindle 80 and is-held in place thereon by the pins 91, Fig. 5. The under surface of the sleeve 90 is flattened" to form a bearing-surface for the cam 93, which is pivoted on the bracket 7 O and'is provided with the operating-handle 94. The weight of the spindle 80 and spinning-tOol holds the flattened surface of the sleeve '90 against the cam 93, and by depressing the handle 94 the spindle 80 will be lifted, carrying the spinning-tool against the work, Figs. 9and 10, with a variable pressure entirely underthecontrol of the operator.

In the drawings,- Figs. 7 to 10, I have shown almandrel and'spinning-tool arranged for the final spinningoperation of a vase-like article 24 from a shell formed by any suitable means from'afi'at'blank of metal. The mandrel, as is" customary in all spinning operations, is formed to correspond with the contour desired in the'finished article. The shell to be subjected to the spinning operation is placed upon the mandrel 8. and the back-support 22 is adjusted' in position against the end of the shell and -the' tail-stock is clamped in position by the handle 20in the usual way. The drivingpulley 15-is then started and the mandrel and the shell are'rap'idly rotated. The drivingpulley 42 isthen' started, positively and rap idly rotatingthe spinning-tool. The handle 94 is then depressed and the spinning-tool is gently, but with increasing pressure, brought against the revolving shell, pressing and drawing the metal gradually, but with great rapidity, to the desired shape. When this is accomplished, the finishing-roll is held against. thespun shell momentarily, the surplus metal isthen cut away from the open end ofthe shell, and the latter is removed in a completed condition from the mandrel. Another'shell is'then placed upon" the mandrel and the op-' eration isrepeated as before.

I have selected for the purpose of illustration" and description a complete spinning-machinewh-ich embodies my invention in a pre- IIO ferred form; but it is not my intention that my invention shall be limited to this particular form of apparatus, since many modifications may be made therein without departing from the spirit or scopeof my invention.

In the process of hand-spinning articles having a curvilinear outline the thickness of the metal is very uneven, being much thicker on the small diameters. This unevenness is due to the fact that the metal is by the spinning-tool stretched over the large diameters of the mandrel and is compressed into the small diameters, and this excess of metal is not only wasted, but in certain classes of Work a separate operation is necessary to remove it. By the use of my invention the metal is forced along the mandrel by the rotation of the spinning-tool in that direction and a substantially uniform thickness of metal is secured at all points of the completed article, which results in a large saving in the amount of stock required and also obviates the necessity of the subsequent operation to remove the excess metal. Moreover, the machine can be operated by comparatively unskilled labor and the surface of the finished work is much smoother and even, requiring less labor in polishing and finishing the article.

I have obtained the best results by arranging the axis ofthe spinning-tool at right angles to the axis of the work-supporting mandrel; but depending somewhat upon the form ofthe spinning-tool it is not essential that this rectangular arrangement should be exactly adhered to under all conditions so long as the action of the spinning-tool upon the (\iNOIik tends to force the metal along the man- Having thus shown and described my invention, what Iclaim as new, and desire to secure by Letters Patent, is

1. In a machine for spinning metal,the combination of a rotating work-supporting mandrel, a positively-rotated spinning-tool having a multiplicity of Working and depressed surfaces irregularly and alternately arranged and extending in a general axial direction, and means for holding the spinningtool against the work with a variable pressure.

2. In a machine for spinning metal,the combination of a rotating work-supporting mandrel, a rotating spinning-tool and means controllable by the operator for variably pressing the spinning-tool against the work.

3. In a machine forspinning metal, the combination of a rotating work-supporting mandrel; a positively-rotated spinning-tool and means controlled by the operator for holding the spinning-tool against the work with a variable pressure.

4. A rotatable spinning-tool having a multiplicity of working and depressed surfaces irregularly and alternately arranged extending in a general axial direction.

5. In a machine for spinning metal, the com bination of a rotating work-supporting mandrel, a positively-rotated spinning-tool having a multiplicity of irregularly-spaced working surfaces and means for holding the spinningtool against the work with a variable pressure.

6. In a machine for spinning metal, the combination of a rotating work-supporting mandrel, a positively-rotated spinning-tool having a multiplicity of working surfaces of varying widths, and means for holding the spinningtool against the work with a variable pressure.

7. A rotatable spinning-tool having a multiplicity of irregularly arranged channels formed on its working surface.

8. A rotatable spinning-toolconical in general outline and having a multiplicity of irregularly spaced converging working surfaces.

9. A rotatable spinning-tooLconicalin general outline and having a multiplicity of irregularly: spaced, converging working surfaces of different areas.

10. In a spinning-machine the combination with a rotating Work-supporting mandrel of a positively-rotated spinning-tool having its axis angled to the axis of the mandrel and means for adjusting the position of the spinning-tool along its axis.

11. In a spinning-machine the combination of a rotating work-supporting mandrel, a rotating spindle carryinga spinning-tool and pressure means acting on the spindle for holding the spinning-tool against the work on the mandrel with a variable pressure controllable by the operator.

12. In a spinning-machine the combination of a rotating, work-supporting mandrel, a finishing-roll having its axis parallel with the axis of .the mandrel and a positively-driven rotating spinning-tool having its axis angled to the axis of the mandrel.

13. In a spinning-machine the combinationof a rotating, work-supporting mandrel, a fine ishing-roll having its axis parallel with the axis of the mandrel, means for holding the finishing-roll against the work with a fixed pressure, a positively-driven, rotating spinning-tool having its axis angled to the axis of the mandrel and means for holding the spinning-tool against the work with avarialole pressure controllable by the operator.

ERNEST OLDENBUSOH.

Witnesses:

R. L. ORANFORD, FRED (J. I/VIL IAMs. 

